"James,
I've made the changes as you've described, but how are you reading pin 13 into sonar_alt? I will be using pin 15 and am not sure where/how that needs to be changed in the code.
Thank you!
Kate"

"Thanks for the encouragement, Eric. Will do!!"

"Aaron,
Glad to see someone else who's accomplished configuring gas sensors to the APM. I have an H2S gas sensor (link here) that I need to configure to the Pixhawk. How did you test/calibrate the sensors? Definitely interested in hearing about your…"

"Got it. Once I get my connectors in the mail, I'll start testing. Thank you so much for your help!!"

"Wow, this is great. Can't thank you enough for this.
Just to clarify, you did this with an Arduino communicating between the sensor and Pixhawk? Do you know if there is a way to eliminate using the Arduino?
Thank you!"

"Hi Mike,
I didn't know much about configuring the fail safe operations until I investigated with the link you provided. After going through them with the mission planner, it seemed like most of mine were already set up... right now I'm having issues…"

"Darn, sorry that happened. Noted. Thank you, Eric!"

"This is extremely helpful, thank you Francis!"

"Thanks, Quadzimodo. I'll look into this!"

"Nevermind.... found your other post in the IRIS page. Thanks!"

"Glen,
Did you ever figure out an answer? I am trying to assemble my IRIS now and have the same question about how far down the props should sit...
Thanks!
Kate"

"Thank you, so glad to finally get a straight answer. I was about to lose my mind in confusion."